This is nothing new. Apple has been tracking searches in the App Store, which apps you scroll past and which ones you tap on very far back, maybe even since the

This is nothing new. Apple has been tracking searches in the App Store, which apps you scroll past and which ones you tap on very far back, maybe even since the initial App Store, that's how they figure out how to rank various apps for various search terms (I don't know the exact formula but one of the components is CTR for a particular search term, others appears to be rating score, number of ratings, number of written review, number of total downloads, download velocity, given keywords, title, company name, trademark, update frequency, etc). If you search multiple times for the same term you will see a slight variation in search results, that's how they give apps a chance to move up or down. IE they move you down one slot but you still outperform the app above in CTR, you probably should remain in your current spot, or move up. Another app gets moved in front of their current ranking and the app that got moved down outperforms it in CTR, keep things as they are.